When the card is displayed, simply print it on your color printer.
You can print it on card stock, turn it over and print it again on the
back side and you can cut out two sided cards.
Get your cards autographed by your favorite skiing stars.
For the sheets, probably the best thing is to print them in color and
have them copied onto card stock with a color copier. The sheets
must be printed in "landscape" mode. If you are going
to print a 2 sided card with your printer, be sure to test first as
you may have to set the margins differently on the two cards to
get them to line up back-to-back.